| Abstract: | Two new one‐dimensional (1D) coordination polymers (CPs), namely catena‐polyaquacadmium(II)]‐bis(μ‐4b,5,7,7a‐tetrahydro‐4b,7a‐epiminomethanoimino‐6H‐imidazo4,5‐f]1,10]phenanthroline‐6,13‐dione)] bis(perchlorate) dihydrate], {Cd(C14H10N6O2)2(H2O)](ClO4)2·2H2O}n or {Cd(BPG)2(H2O)](ClO4)2·2H2O}n, 1 , and catena‐polylead(II)‐bis(μ‐4b,5,7,7a‐tetrahydro‐4b,7a‐epiminomethanoimino‐6H‐imidazo4,5‐f]1,10]phenanthroline‐6,13‐dione)] bis(perchlorate) dihydrate], {Pb(C14H10N6O2)2](ClO4)2·2H2O}n or {Pb(BPG)2](ClO4)2·2H2O}n, 2 , have been synthesized using bipyridine–glycoluril (BPG; systematic name: 4b,5,7,7a‐tetrahydro‐4b,7a‐epiminomethanoimino‐6H‐imidazo4,5‐f]1,10]phenanthroline‐6,13‐dione), a urea‐fused tecton, in a mixed‐solvent system. The CdII ion in 1 is heptacoordinated and the PbII ion in 2 is hexacoordinated, with the CdII ion adopting a pentagonal bipyramidal geometry and the PbII ion adopting a distorted octahedral geometry. Both CPs form infinite linear chain structures which are hydrogen bonded to each other leading to the formation of three‐dimensional supramolecular network structures. Topological analysis of CPs 1 and 2 reveals that the structures exhibit 1D chain‐like arrangements in an AB–AB sequence and shows platonic uniform 2‐connected uninodal topologies. Furthermore, a comparative analysis of a series of structures based on the BPG ligand indicates that the size of the metal ion and the types of counter‐ions used have a great influence on the resulting frameworks and properties. |
